James Harden has averaged 27.6 points, 7.2 assists and 5.7 rebounds in 94 games as a starter in the playoffs in his career.

harden playoffs stats as a starter
NAMEGPMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
James HardenJames Harden9437.827.65.77.21.90.64.28.319.642.43.09.132.78.09.287.43,5572,59853967918057397297+126
StatMuse has game-level data for games started going back to the 1982 playoffs.